The Factor 55 high strength stainless steel hitch pins are available in 2 styles. Quick-Release or Locking. The locking style provides theft security when locking a ball mount or accessory to your 2 or 2-1/2″ hitch receiver. Both pin options have a grooved head for ease of handling, a 50,000+ lb shear strength, and proudly made in the USA. Fits 2 and 2-1/2 inch hitch receivers. Quick-release or locking options. 303+ high strength stainless steel construction (See above material spec photo). 3-1/8 inch span. 5/8 inch diameter. 50,000+ lb. shear strength. Made in the USA. Features: Flush-style hitch pin secures your ball mount or accessory to your 2 or 2-1/2″ hitch receiver. Compatible with late-model Toyota Tundra and Tacoma 2″ factory hitches. 303+ High Strength Stainless Steel Construction. Grooved pinhead is easy to grab. Locking Pin features o-ring to protect internal components from dirt and grime. Integral weather-resistant tethered dust cap to keep water and debris out of keyways. Uses key to rotate lock in place - Please note - Sufficient hand clearance needed to rotate key. 2 Keys included.