Features:
1) Auto-lubrication
2) Vertical twice large rotary hook
3) Safety clutch device protecting hook

Applications: for sewing medium and heavy weight materials

Specifications:
1) Max sewing speed: 2000spm
2) Max stitch length: >=9mm
3) Presser foot lift height: 8mm by hand, 16mm by knee
4) Max sewing capacity: 8mm (8 layers of leatherette)
5) Needle: DP x 17 20# ~ 30#