WEDO Writing support SATTLER GRIP. This ergonomical writing support was developed by Dr. Johanna Sattler.The SATTLER GRIP can be easily slipped on to writing instruments, craft knives, brushes etc.The soft material is free of any toxic substances and very well suited for left and right hand use and persons who suffer of arthritis desease. Lenght: 3,4 cm. Delivery in box of 30 pieces in assorted colours.