OTC Tools OTC 5028 Slide Hammer Puller. OTC Tools. Just 8-1/2" long to fit into tight spots, but its 1-1/2 pound hammer gives you a little extra muscle for stubborn jobs. It's perfect for pulling injector nozzles. The shank is threaded 1/2" 20 and has a 5/8" 18 threaded adapter included. Works with many OTC pulling attachments. Email for product availability.