Bosch Bosch Professional Universal Mount Device, BM-3, 1/4-20 Thread Size AED166.00 (Incl.VAT) The Bosch BM3 Positioning device can be used in many different ways with line lasers: magnetically attach it to a metal surface, set it on the floor and stabilize with retractable feet, or mount it to drywall with screws. The very strong magnets and... Add to Cart Buy Now