Boa Constrictor 
The world’s original and number one selling strap wrench. Invented by Boa. The Standard Boa strap wrench is ideal for many applications including plumbing, automotive, A/C installation and maintenance, pool filters, oil filters etc., the list of uses is endless. Provides over 2000lb of pressure without marking the workpiece. The reinforced braided rubber strap enables a wide range of uses on any shaped object and works on all materials. Suitable for professional, industrial or DIY