4mm Straight Push In Adapter Pneumatic Connection Fittings. Pneumatic Push Fittings can be rotated 360 degree around the threaded part. Push Connection Fittings with the 4mm/6mm diameter straight union. Total size: 1 3/16" x 0.5"(L*W); Diameter: 4mm to 6mm; Weight: 6.3g Package content: 2 x 4mm to 6mm Push In Fittings, Weight: 0.013889122506 pounds, Manufacturer: Sourcingmap