Block Dimensions
| SBS-1 |
| Body length | 17.5 mm |
Length including Shackle | 23 mm |
| Width | 10.4 mm |
Body Thickness | 5.1 mm |
| Thickness across Shackle | 8 mm |
Sheave Diameter | 7.3 mm |
| Maximum Line Size | 2 mm |
Mass | 2 grams |
| DMB-1 |
| Length | 21.4 mm |
Width | 10.0 mm |
| Height excluding screw | 5.1 mm |
Height of Screw Head | 1.7 mm |
| Sheave Diameter | 7.3 mm |
Maximum Line Size | 2 mm |
| Screw Spacing | 16.0 mm |
Length of Screws | 20 mm |
| Mass | 3 grams |
Screw Thread | M2x0.4 |
| DMB-2 |
| Length | 21.4 mm |
Width | 10.0 mm |
| Height excluding screw | 8.3 mm |
Height of Screw Head | 1.7 mm |
| Sheave Diameter | 7.3 mm |
Maximum Line Size | 2 mm |
| Screw Spacing | 16.0 mm |
Length of Screws | 20 mm |
| Mass | 4 grams |
Screw Thread | M2x0.4 |