Arca-Swiss, Manfrotto-Type 501

1 x 1/4"-20 Thread
1 x 3/8"-16 Thread
2 x 1/4"-20 Screw

3.15 x 3.13 x 1.26" / 80 x 79.4 x 32 mm

4.1 oz / 116 g

0.335 lb

4.5 x 4.1 x 1.4"