US PRO 2313 – 2-Pc Adjustable Gland-Nut Pin Wrench Set for Hydraulic Cylinders (1″–6″)

Service hydraulic cylinders cleanly and safely with the US PRO 2313 two-piece pin-spanner set. Each wrench features adjustable arms with interchangeable round pins to fit common gland-nut holes. Use the small wrench on compact rams and the large wrench for bigger agricultural and construction cylinders. Square-drive bosses (1/2″ & 3/4″) let you apply steady torque with a ratchet or breaker bar—no improvised tools, less risk of damage.

What’s included
Large wrench

• Adjustable range: 2″ – 6″ (pin-to-pin)

• Pins: 1/4″ (one side) and 5/16″ (other side) round pins

• Drive: 3/4″ square

Small wrench

• Adjustable range: 1″ – 3 3/4″ (pin-to-pin)

• Pins: 1/4″ (one side) and 7/32″ (other side) round pins

• Drive: 1/2″ square

Key features / specs

• Coverage: 1″–6″ across two wrenches

• Pins supplied: 1/4″, 5/16″, 7/32″ round pins

• Drives: 1/2″ & 3/4″ square (breaker bar or ratchet)

• Use cases: hydraulic cylinder gland-nuts on construction, farming, automotive & industrial equipment

• Brand: US PRO • Code: 2313 • Pieces: 2

Usage tips

• Seat both pins fully; keep the wrench square to the gland.

• Apply force steadily via breaker bar; avoid shock loads.

• If seized, use penetrating fluid and heat per OE guidance.