1.Type:Delrin knob stainless steel locking hand retractable plunger 2.Material: SS, carbon steel, 3,High quality, ... stainless steel locking hand retractable plunger2. Material: Stainless steel, carbon steel,aluminum3 Finish: Zinc plated, passivated, Nickle plated4 Packing: Outer carton with ... .10. Standard and non-standard available Stainless steel Delrin Knurled hand retractable plunger