The world&rsquos original and number one selling strap wrench. Invented by Boa, copied by everyone The Baby Boa strap wrench is ideal for many applications including plumbing, jobs in the car, workshop or kitchen where a stronger grip and more torque is needed. The reinforced strap enables a wide range of uses on any shaped object. Works on all materials and will not scratch or mark. Provides a strong grip and high leverage. 25 million plus customers can&rsquot be wrong Capacity 100mm (4in)