The Norbar Professional Adjustable 'Mushroom' Head Torque Wrenches are fitted with NorbarÕs ÔIndustrialÕ style of ratchet. Using the principle of Ôoffset pawlsÕ, these ratchets feature a robust tooth pattern and a narrow engagement angle, meaning that the wrench is easy to use in tight spaces. The square drive features a finger grip on the top (the ÔmushroomÕ head) that assists with running down the nut until resistance is met. The square drive can also be removed and replaced in the opposite direction so the wrench can give torque control in both the clockwise and anti-clockwise directions. The ÔIndustrialÕ ratchet is specifically designed for torque wrench application and provides users with the perfect combination of strength, versatility and ease of use.