DIY Knee Kicker - China Carpet Kicker, Carpet Tools

Foam-filled seamless bumper pad for extra comfort Trigger release easily adjusts length from 17 to 21 with a single button push Center-grooved head

Roberts Carpet Tools Deluxe Knee Kicker 10-412-2, Silver

Carpet Install Tools Carpet Iron Carpet Stretcher Knee Kicker Steel Shovels Carpet Tape Carpet Tools Can Be Freely Combined - AliExpress

Foam-filled seamless bumper pad for extra comfort Trigger release easily adjusts length from 17 to 21 with a single button push Center-grooved head

Roberts Carpet Tools Deluxe Knee Kicker 10-412-2, Silver

Carpet Stretcher - Middleton Farmers Cooperative Co., Middleton, WI

Update: This highly upvoted tool from a month ago is a carpet stretcher : r/whatisthisthing

Carpet Installation Knee Kicker with Adjustable Stretcher and Carpet Tucker and Carpet Cutter Combo : Health & Household

Wholesale knee kicker Crafted To Perform Many Other Tasks

Tools for Carpet Installation - China Carpet Kicker, Carpet Tools

How To Make A Carpet Stretcher/ Kicker