Retaining Ring Kits Rotor Pack (RPK#4) Rotor Pack features 1,000 retaining rings in four durable, clear-plastic boxes with easy snap on/off lids. Boxes fit into slots on a plastic holder which folds in half into a convenient, portable carrying case. Rotor Pack contains internal ring sizes that will fit housings/bores from 3/8” in diameter to 1-1/8”. External rings in the kit will accommodate shaft sizes from 1/4” to 1-1/8”. Contains 2 pliers to fit every ring in the kit. Rotor Pack, Jr. (RPK#5) Rotor Pack Jr. contains E rings accommodating shaft sizes from 1/16” in diameter to 1-3/16”. Please wear protective eyewear while installing and removing retaining rings & hose clamps. For the most up-to-date specifications, online ordering, quotations & sample orders, visit www.rotorclip.com