This is a combined set of 20 mini stubby spanners, featuring both metric and imperial sizes. Each spanner is a combination type, meaning it has an open-ended wrench on one side and a ring spanner on the other, making them perfect for small jobs and model making. Manufactured from chrome vanadium steel, these spanners offer strength and durability. Their midget, mini size provides ideal access into tight and awkward areas. Each spanner is designed with two different sizes, one for the ring end and another for the open end, allowing for versatile use. The set includes 10 metric spanners ranging from 4mm to 11mm and 10 imperial spanners ranging from 3/16" to 7/16". The metric spanners included are: 4mm (open) / 4.5mm (ring), 4.5mm (open) / 4mm (ring), 5mm (open) / 6mm (ring), 5.5mm (open) / 5.5mm (ring), 6mm (open) / 7mm (ring), 7mm (open) / 8mm (ring), 8mm (open) / 9mm (ring), 9mm (open) / 10mm (ring), 10mm (open) / 11mm (ring). The imperial spanners included are: 3/16" (open) / 5/32" (ring), 13/64" (open) / 7/32" (ring), 7/32" (open) / 15/64" (ring), 15/64" (open) / 1/4" (ring), 1/4" (open) / 9/32" (ring), 9/32" (open) / 5/16" (ring), 5/16" (open) / 11/32" (ring), 11/32" (open) / 3/8" (ring), 3/8" (open) / 7/16" (ring). The set comes in a convenient pouch for easy storage and transportation. Weight: 0.53792791928 pounds.