$68.99 PEX Cinch Crimp Crimper Crimping Tool for Hose Clamps Size 3/81/2 5/8 3/4 1 | eBay
The Plumber's Choice Pex Tubing Plumbing Kit Crimper Tool 1/2 in. and 3/4 in. Elbow Stainless 
ZURN PEX Copper Crimp Clamp Ring, Clamp Connection Type, 1/2 PEX Size - 10A573|QCR3X - Grainger
