ACCU-TAC Spike Feet G1 Black Small. They provide aggressive traction on dirt or any soft surfaces. They are CNC machined and black oxide treated. The replacement spikes have a simple screw on design that allows you to quickly change from rubber feet to steel spikes in seconds Specifications for ACCU-TAC Spike Feet G1: Manufacturer: ACCU-TAC Color: Flat Black Weight: 1.7 oz Finish: Black Oxide Fabric/Material: Steel Hardware Aluminum Alloy Quantity: 1 Country of Origin: USA Features of ACCU-TAC G1 Spikes G1 Spiked Feet are for the following Accu-Tac Bipods: SR-5 SR-5QD BR-4 BR-4QD FC-5QD Package Contents: ACCU-TAC Spike Feet G1 ACCU-TAC SRS-0200: Spike Feet G1 Black Small