Great tool for any Heavy Duty shop that works on low boys, refers, log trucks and more. Now you can remove and replace the S-Cam bushing on air brake equipped trailers without removing the wheel hub or replacing the wheel seal. Save time and money yourself and for your customer with this innovative durable tool. Offer S-Cam replacement with every brake job. 1-7/8" OD and 1-5/8" ID California Residents WARNING