The spline drill bits and chisel bits have different profiles. On the other hand, an SDS-max bit is easy to use and keep the bit securely locked inside the tool holder, yet allows it to move up and down during the hammering action.

A spline shank with its 12 sprocket design offers more contact area and hence more efficient. The main difference between a spline bit and an SDS bit is in the size and profile of the shank. What is the difference between SDS Max and Spline? Spline Shank: The 12 teeth are designed to fit perfectly into the drill so that no adjustment needs to be made during the drilling or hammering process.Īll four sections work together to drill or punch holes in concrete so that anchors can be attached or to meet the needs of the project that requires holes to be placed in concrete. Land: This is where the spiral portion of the bit, which resembles the crest of a wave, is raised.

The carbide tip is quite hard and durable, allowing to bust up the concrete with ease.įlute: This is the depression or trough of the bit that allows the dust from the concrete to be removed while the drilling action is taking place. The bit is made up of four different sections.Ĭutting Tip & Head: Both parts work together to break up the concrete itself. Spine bits used to be a popular choice for rotary hammers and demolition hammers before the SDS bits became more popular. This type of shank has 12 teeth that is designed to fit into the spline drive of the hammer drill. The name come from the cross-sectional profile of the spline shank itself. The three most commonly used spline bits are, Rotary Hammer Spline Bits, core bits and chisel or chipping bits.

Rotary hammer drill chisel bit