The high quality bottle opener is very sturdy and super easy to install Easy-to-install threaded ends are perfect for DIY and craft projects Hole recommendations: soft materials 2.22 cm -1.27 cm and hard materials 4.28 cm drill bits colour:Silver Material:Metal size:8.3 x 4.5cm Package Contents: 8 x Bottle Opener Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.