46" closed length pin-hole to pin-hole 1-1/4" Rod Diameter 2.0" I.D. Bore (Outside diameter approx. 2.5") Ports are 90 degrees to Pin High grade anodized 6061 T6 Aluminum Glands and Shanks machined precisely to guarantee interchangeability when ordering spare parts. High yield strength, 0.001 thick chrome plated rods All Boydstun cylinders are one-hundred-percent leak tested and Laser engraved with the Boydstun logo and manufacturing date code