Hidove 100 Pack Steel Round Inset Opener Inserts Kit, Opener Wall Mounted kit with 200 Screws

OPENING WITH ONE HAND: No spilling when using this opener, when using one hand. project for woodworkers or brewers Material: Steel Opener Kit. Size: Diameter--1.57"/4cm,Thickness--1.8mm. Set of 100 opener inserts, with 200 screws provided.