WinMaster WGR BALL PRECISION MILLING CUTTER WGR Dimensions, mm Item Code Teeth Insert Screw Wrench D d L M IWGR16-MD14 16 8.5 28 M8 1 WP3216... MGR5016 TF20 IWGR20-MD18 20 10.5 30 M10 1 WP3220... MGR5020 TF20 IWGR25-MD23 25 12.5 40 M12 1 WP3225... MGR6025 TF30 WP32 Alloy Steel Finishing Stainless Steel Semi Finishing Cast Iron Medium H Hard Steel Roughing Dimension (mm) Application Material Type Designation Grade D S d1 L P M K H CP3020 ★ ★ ★★ ★★ ◎ ○ ○ ○ WP32 16-SG 16 3 5 14.0 CP3050 ★ ★ ★★ ★★ ◎ ○ ○ ○ CP3020 ★ ★ ★★ ★★ ◎ ○ ○ ○ WP32 20-SG 20 3 5 16.0 CP3050 ★ ★ ★★ ★★ ◎ ○ ○ ○ CP3020 ★ ★ ★★ ★★ ◎ ○ ○ ○ WP32 25-SG 25 4 6 21.5 CP3050 ★ ★ ★★ ★★ ◎ ○ ○ ○ ★ Acceptable   ★★ Recommended   ★★★ Excellent    ◎ First Recommend    ○ Second Recommend B56