The CELIRO Tool-Tip Magnetizer set is a versatile tool accessory for both home repairs and tradesmen. This compact yet incredibly useful slide-on device can magnetic any circular- or hexagonal-profiled tool with a metal shaft 4mm (5/32”) to 6.35mm (1/4”) in diameter and has a self-fastening mechanism that keeps in the ring place. N35 neodymium magnets provide ample strength to hold most screws in place while working at difficult angles e.g., ceiling installations, can be used to pick up multiple screws or keep them fastened together to the outside of the ring – handy for furniture assembly. A two-ring set means that even if one get lost, there's always a second available.