Pop Pin w/ Weld On Barrel Tip Dia 1/2 In Barrel Dia 1 In Tip Length 0.86 In 2.25 In Rounded T Knob Straight Tip Style Case Hardened Steel Pin Zinc Plated Pin 1.50 In All 1/2 In Diameter Straight Tip Pop Pins Are Designed To Be Used Only In Cases Where The Wall Thickness Of The Material Where The Barrel Is Being Welded is 9/32 In or Greater