uxcell 4-48 Whitworth 55 Degree Screw Thread Pitch Measure Gauge Black Gray Product Name: Screw Pitch Gauge; Material: Metal Weight: 19g; Package Content: 1 x Screw Pitch Gauge Thread Type: Whitworth 55 Degree Thread; Pitch Range: 4,4.5,5,6,7,8,9,10,11,12,14,16,18,19,20,22,24,28,32,48 Main Color: Black, Gray; Overall Size: Closed:6.5 x 1.4 x 0.6cm/2.6" x 0.55" x 0.23"(L*W*H) Leave Quantity: 20