Locking-collar quick-connect sockets from Water Cannon are precision-machined to promote smooth action and reliable service. Hardened stainless steel sockets resist plug deformation when pressure spikes occur. The flow-through design provides an unrestricted bore with minimum pressure loss. The brushed sockets have a safety locking collar with alignment pin, push and snap-lock smooth-action collar with easy-to-grip barreled rings and replaceable O-ring for a watertight seal. They are rated to 210 degrees F and up to 6,300 psi. 800/333-9274; www.watercannon.com.