Too expensive, basically a thick $12 washing machine. Works great, but I think I can put together some thinner rubber washers and do the same thing for less than a buck.
Rubber Bumper Tight Grip Diameter Thickness
3 Review
Jameco Valuepro BS 18 CLEAR100 Rubber Adhesive
Enhanced Stability with Adjustable Rubber Bumper Levelers Thread
Ives Commercial SR64BG Silencer Rubber: A Noise-free Solution for All Surfaces
High-Quality White Plastic Flush Type Plugs for Industrial Hardware Applications
9 Review
Continental ContiVikingContact 7 195/65 R15 95T winter
21 Review
π Kreg P OAK Plugs Pocket Hole 50 Pack
7 Review
π§Ό Efficient Cleaning with Canplas 193064 Flush Cleanout - 4 Inch Diameter