| Brand | Yato |
| Entity responsible for this product in the EU | TOYA S.A.More |
| Series | GRD |
| Size | 3/8" (9.6 mm), 29/68" (11.6 mm), 1/2" (12.6 mm), 21/32" (16.4 mm), 27/32" (21.0 mm)More |
| Drive adapter size | 1/2" (12.7 mm) |
| Material | CrV |
| Surface finish | chrome plated, satin |
| Application | for mounting connectors with external thread (male), for mounting heating valves, for installing lower cut-offs on radiator returns, for mounting valve extensions |
| Symbol | YT-03319 |
Graduated key with a 1/2" drive designed for installation work on heating fittings and threaded connections. Made of chrome-vanadium steel (CrV), it ensures high resistance to torsional loads and wear during frequent use. The graduated construction allows for handling multiple diameters with one tool, and the notches on both sides enable secure fitting in screws with protrusions.
Application:
- assembly and disassembly of external threaded fittings
- installation of radiator valves
- handling of bottom cut-offs on radiator returns
- screwing in valve extensions
Size range:
- 3/8" (9.6 mm)
- 29/68" (11.6 mm)
- 1/2" (12.7 mm)
- 21/32" (16.4 mm)
- 27/32" (21 mm)
Design features:
- drive: 1/2" (12.7 mm) – compatible with ratchet or handle
- material: CrV steel – increased durability and resistance to deformation
- working notches on both sides – stable guidance in elements with protrusions
- graduated construction – one tool replaces multiple installation keys
