We have a large range of Heavy duty ribbed inserts to fit most tube sizes and wall thicknesses. Please contact us if you cannot find what you need.
Help to understand what size you need
The first measurement shown is the Outside Diameter of the Tube and the last numbers represent the thickness of the tube that it will fit. As these inserts are ribbed there are two measurements to show the variance in the wall thickness the insert will fit. For example a 19mm x 2.0/1.5 insert. The 19mm is the outside diameter measurement of the tube. The 2.0 is the thickest tube wall thickness it will fit and the 1.5 is the thinnest tube wall thickness it will fit.
An easy way to calculate the inside diameter measurement and to check that the insert you select will fit is to first find the insert that is closest to the Outside measurement of your tube.
Double the wall thickness you have and subtract it from the Outside measurement. In the 19mm x 2.0/1.5 example, if you double the 2.0 = 4mm and double the 1.5 = 3mm This means that this insert will fit a tube with an OD of 19mm and and Inside Diameter of 19-4 = 15mm to 19-3 = 16mm - so Inside Diameter between 15 and 16mm.
So in this example if you need an insert to fit a tube with OD of 19mm and ID of between 15mm and 16mm then you have the right one.
Next Day Delivery: If you require your products on a next-day service, please ring us and check our stock levels of the products that you want to order. Any Next-Day deliveries must be ordered by 12 noon (mid-day). Any orders placed after that time slot may not be accounted for next-day delivery. Every order that is placed for a next-day delivery requires for a contact number to be put with the order so that if for any reason the courier cannot deliver they can call you. In a situation, where a delivery cannot take place the driver will leave a card providing details of where you can collect your undelivered parcel from. On some occasions we can even ship the same day! Get your orders in by 12pm Noon.
2nd Class: Royal Mail quote 2-3 working day delivery, including Saturdays. Please Note: *This is not a tracked service* If you require a tracked service that is not next-day delivery, please call us and we can arrange for this.
Air Mail – International Postage: Our prices are based on Royal Mail’s prices. We can ship anywhere outside of the UK.
Free Shipping: Where a product has free shipping listed on it, this applies to any deliveries in the UK. We cannot offer free shipping outside of the UK.
Posted by Unknown on 8th Jun 2020
I am a returning customer for these chair feet, they fit well into the tubular legs (old ones removed with a cork screw, new ones tapped in). Very easy. Fast delivery, no issues, very satisfied.
Posted by Unknown on 14th Feb 2018
Exactly what I needed to replace feet on the kitchen chairs. Good price and prompt service. Nice that there wasn't a minimum spend.
Posted by Dave on 3rd Jul 2015
great product and service
Posted by Phil Blair on 14th Feb 2015
Having just received my order of Heavy Duty Ribbed Plastic Round Inserts I was able to immediately replace the worn out plastic feet of our kitchen chairs. The online guide to getting the right size made the selection so easy and they fit perfectly. Add prompt despatch + good price = perfect service!
Posted by Unknown on 8th Jul 2014
My mom's kitchen chairs plastic inserts had all worn through and were marking the tiled floor. She had used the inserts from the uprights for feet as a last resort and had replaced those with sherry corks. A quick search online & I found Castors Unlimited. , got enough inserts to replace to replace all 6 in each of 4 chairs plus some spares for less than the price of a pack of 10 at the local DIY superstore. The inserts look a lot more robust than the originals also. Good service all round.
Posted by David Podmore on 13th Mar 2014
When I first ordered the plastic round inserts, I ordered the wrong size, I contacted Castors Unlimited and they exchanged them with no hassle. It was a great pleasure to do business with.
if there are anyone out there looking to do business with CU I would recommend there with no worries.
Many thanks
Dave P
Posted by Ian Betts on 16th Jan 2014
Happy New year and my apologies for taking so long to get back to you. With regards to both your service and the product that I ordered for the school, I would like to say I was very impressed with your assistance in getting the right item.
No doubt I will be in contact with you as and when we need more items!
Many thanks Ian Betts, Blessed William Howard Catholic High School.