This is the XS Scuba Multi-Purpose Tool 1.5mm Steel Wire Flat Tip Features: Strong 1.5 mm steel wire with flat tip Can be used to extract HP seats from pistons or push crown orifices out of 1st & 2nd stage valve bodies There is no limit to the number of applications for this tool on the scuba repair bench This very useful tool is a repair technician&&';;s best friend.