DIN 2185  sleeves for tools with morse taper shanks ,
tang hardened, cone inside and outside ground
available sizes: MK 1 x 0 bis MK 6 x 1

DIN2187 Extension sleeve  with morse taper shanks

tang hardened, cone inside and outside ground,
available sizes: MK 1 x 1 bis MK 6 x 5

277 ,274 series sleeve available.