MagiDeal Pack of 2 Rock Climbing Tree Arborist Rope Fixed Side Pulley 20KN - 2 Colors This lightweight and durable pulley is an ideal choice for various applications Material: Aluminium Alloy Dimensions: approx. 8 x 4.5 x 2.6 cm / 3.15 x 1.77 x 1.02 inch Closed Strength: 20KN / 2000kg Suitable for 8-12mm rope