3/8" Rubber Spike Foot for Tripod Monopod on Smooth Uneven Surface 30x40mm 3PCS 707918625973 | eBay
Tripod Rubber Feet 3/8" Foot Pads and 3/8" Screw for Tripods Monopod | eBay
Andoer Universal Anti-Slip 1/4 Inch Tripod Monopod Rubber Foot Spike for Andoer Benro Gitzo Manfrotto Tripod Monopod (3 pcs)
Monopod Selfie Stick Lightweight 28-157cm Wide Application Camera Monopod Detachable Rubber Foot Pad with 1/4 Inch to 3/8 Inch Screw for Hiking : Amazon.ca: Electronics