SDS Plus drill bits are thinner and smaller compared to SDS Max bits. These bits have two open grooves and two closed grooves. Locking balls are attached to the grooves. These bits are interchangeable with SDS drill bits and are available in a variety of sizes.

The type of material you'll be drilling into will determine the type of SDS drill bit you need. If you're drilling into hard materials like concrete and stone, you'll need an SDS max drill bit. If you're drilling into softer materials like wood and plastic, an SDS plus drill bit will do the job.

A: SDS stands for "Slotted Drive System". SDS bits are widely used in larger rotary hammer drills. The special slot milled into the bit provides greater holding power when compared to round shank bits in a standard three-jaw chuck. by DewaltProductExpert |Apr 18, 2023.

SDS is simply the bit retention system — or how the bit is held in the drill. There is some debate as to what the "SDS" acronym stands for. The original German interpretation was "Steck-Dreh-Sitz" meaning Insert-Twist-Stay. As the bit evolved, it has come to be known as a Slotted Drive System or Slotted Drive Shaft.