Features: 1. Contains 8 different sizes head to meet different types of watch. 2. Safe way to not scratch watch when remove watch case or repair movement. 3. Easy and convenient to operate as well as labor saving. 4. Great for watch repairers, watchmakers, and everyday users. 5. and portable design, easy to carry and use. Specification: Item Type: Opening Watch Tool Flexible Glue Head Diameter: . 45 mm / 1.8in, 40mm / 1.6in, 34 mm / 1.3in, 30mm / 1.2in, 26mm/ 1in, 23mm / 0.9in, 20mm / 0.8in, 16mm / 0.6in Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Material: plastic+metal colour: B-Green Package Contents: 1 x Opening Watch Tool 8 x Flexible Glue Head 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.