DuraGuard’s PSC30 Hub Mount Shepherd’s Crook is a 30” Crook Constructed of Seamless Aluminum Tubing. Super Durable Polyester Powdercoat Finish. Custom Finishes, Including Patinas and All RAL Colors (Adder). Arms are fabricated using 6061-T6 Aluminum Alloy 1 ½” SCH 80 pipe.