Grey Pneumatic impact sockets feature durable construction built to handle tough fasteners. Available in a variety of sizes and types, Grey Pneumatic’s sockets are ready for the job. 19mm 3/4 in. Drive 6-Point Metric Impact Socket – 3019M 20mm 3/4 in. Drive 6-Point Metric Impact Socket – 3020M 21mm 3/4 in. Drive 6-Point Metric Impact Socket – 3021M 22mm 3/4 in. Drive 6-Point Metric Impact Socket – 3022M 23mm 3/4 in. Drive 6-Point Metric Impact Socket – 3023M 24mm 3/4 in. Drive 6-Point Metric Impact Socket – 3024M 25mm 3/4 in. Drive 6-Point Metric Impact Socket – 3025M 26mm 3/4 in. Drive 6-Point Metric Impact Socket – 3026M 27mm 3/4 in. Drive 6-Point Metric Impact Socket – 3027M 28mm 3/4 in.