According to DIN 3122 / ISO 3315. Square drive adaptor to DIN 3120 / ISO 1174 with ball lock. Reversible. 180° revolving head. 1/4" reversible ratchet telescoping in 4 stages from 195 – 240 mm. 3/8" reversible ratchet telescoping in 6 stages from 255 – 35
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