• 42 Teeth/8.5° action angle • Specially designed for refrigeration shut-off valves • 1/4" x 3/8" dual head • Convenient combination ratchet and integrated 8.5, 9.5,(3/8") 13 mm female squares for shut off valve • Easy single hand direction change lever on wrench head • High-performance alloy steel • Micro-matt surface finish • Retail packed on an anti-theft plastic card • Standards: ISO 3315, DIN 3122