GB 41 with two side holes it will facilitate the aspiration of bone marrow more effectively.

 An ergonomic handle and a solid stainless steel cannula lead to optimal pressure and absolutely secure handlingThe innovative Penetration Depth Stopper can be very easily regulated and stops exactly where the operator wants to. The graduated scale indicates the range of penetration depth from the tip. The triple sharpening tip of cannula allows easy and atraumatic penetration. The GB40 needle has universal cone luer-lock that allows the connection with the syringes available on the market.