1、Keep simple design, screwdriver bit ring's bright blue appearance is easily visible. 2、Strong magnetic ring supports tenacious attraction, which is helpful for effective positioning. 3、Pinball positioning, the built‑in pinball helps the screwdriver bit to stabilize. And such screwdriver bit socket is made of aluminum + magnet material. 4、Widely matched, screws fixing magnetic ring enables to be common for all H6.3 screwdriver bit. 5、Suitable for self‑tapping of softer materials such as wood board and gypsum board, with limit to prevent penetration caused by over‑tightening. 10 x Screwdriver Bit Ring Item Type: Screwdriver bit ringMaterial: Aluminum + magnetColor: BlueSize: Approx. 15 x 15 x 22mm / 0.59 x 0.59 x 0.87inApplication: Suitable for self-tapping of softer materials such as wood board and gypsum board, with limit to prevent penetration caused by over-tightening.Other Size:Approx. 7mm / 0.3inApprox. 14mm / 0.55in