6" x 2" Stainless Steel Double Strap Saddle

Hi there! Thank you for your interest in the Makita GA5020 angle grinder. Super Joint System (SJS) is an innovation from Makita engineering where the motor's armature and spiral bevel gear are linked by a coil spring. If the grinding wheel catches of binds, the coil spring relaxes and disengages the gears from the motor. As the grinding wheel stops, the gears and motor are protected. We hope this helps. To purchase this Makita GA5020 grinder, just click the 'Add to Cart' button, fill in the required fields, and you're all set. Thank you for seeking answers here at PlumbersStock! Have a great day!