Retract stroke is 49 inches (100 cm) to assure complete detachment, and the cylinder body is made out of a durable plastic, with self-lubricating internal parts and polyester detacher cord.
The Coburn Bou-Matic-Style Pulsator Repair Kit includes the following items: 2--BM0104 Piston 2--BM0112 Coil Base Gasket 4--160107 Star Washer 1--160111 Nipple Gasket 2--BM0113 Top Rubber Insert 2--160114 Bottom Rubber Cap.