The GearWrench 36" long 3/4" Drive Knurled Chrome Ratchet Handle, No. 81403, and the 3/4" Drive Quick Release 24-Tooth Ratchet Head, No. 81402, are connected by a spring-loaded detent pin. The 24-Tooth ratchet head is also available in a set with a 19" handle (No. 81400). The 19" and 36" handles are interchangeble with the ratchet head. The ratchet head features a 24-tooth design, reversible mechanism and quick-release socket retention, all of which improve speed. Its teardrop shape offers improved access while the 36" full polished knurled chrome handle offers additional leverage and grip.These tools meet or exceed ASME specifications.