Product Description: Must have tools and save the cylinder to rebuild the cylinder 1. The Adjustable Throat Gland Nut Wrench is an excellent product proven to disassemble hydraulic cylinders used in a wide variety of heavy equipment /light. No more risking injury to your hands by breaking stubborn gland nuts. Allows you to dismantle all hydraulic cylinders on equipment/box/vehicle to replace several static tools that can only be installed once. 2. Large adjustable gland nut wrench allows custom fit for 2-6 diameter gland nuts, reversible to fit 1/4 and 5/16 diameter pin holes and Easy to use 3/4 diameter pin holes with square drive. 3. Small adjustable gland nut wrench that provides a custom fit for 1 to 3-3/4 diameter gland nuts, flips over to fit 1/4 pinholes as well only 7/32 in diameter, easy to use ratchet with 1/2 screwdriver. Package includes: 1 large adjustable compression nut wrench or 1 small adjustable compression nut wrench,please choose for yourself.