The OTC 5038 Brake Anchor Pin and Bushing Service Set is designed to streamline the maintenance of 16-1/2" S-cam trailer and tractor "Q" brake systems. The OTC 5038 Brake Anchor Pin and Bushing Service Set is also known as a brake pin and bushing removal kit, S-cam brake service tool set, OTC brake maintenance kit, heavy-duty brake pin press set, and tractor-trailer brake repair kit.