Coilhose Pneumatics CH16 (31766) Dual Extension Closed-Check Brass Air Chuck Extension. Dual foot chuck design for secure attachment and reliable inflation. 1/4" FPT (female thread) connection, offset shape, female/female connection type. Constructed from brass for durability and corrosion resistance. Ideal for tire inflation, air tool setups, and lathe chucking applications. Package Dimensions: 7.35 x 3.4 x 1.2 inches; Package Weight: 1 Pounds. ProductDatabase notes: Chuck Type: Dual Foot; Check Type: Closed; UNSPSC Code: 40142200. Product weights and dimensions available from ProductDatabase and marketplace specs; ensure compatibility with 1/4" NPT fittings.