Span: 60 in. Drop: 18 in. Length: 29.5 in. Mounting Hole OC: 9/16 in. Arm, 11/16 in. Pole Mounting Hole Size: 9/16 in. Arm, 11/16 in. Pole Listings: REA Lb/Ea: 5.50 Type: No-Bolt Crossarm Brace Mounting: Underarm, Reversible Number of Braces: Pair Material: Aluminum Alloy Cross Section: 1.75 x 1.75 in. Aluma-Form braces feature end fittings of extruded aluminum 6061-T6 alloy that eliminates the need for bolted fittings. The greater shear and friction area gripped by the Aluma-Form end fitting allows the use of smaller wood members thereby reducing weight and producing a more eye pleasing brace that is stronger than bolted fittings.