OTC Tools OTC 6930 Flange Type Puller. Pulls harmonic balancers, timing gears and parts having two or three tapped holes. Slotted holes in puller body permit cap screws to be positioned to handle bolt circle diameter from 1/2" to 4-5/8". Reach of puller is 4-1/4". Includes 3 cap screws 3/8"-24 x 3", and 3 cap screws 3/8"-16 x 3".