Hair clipper

A hair clipper, comprising:

• at least three blade blocks each including a plurality of comb-like blades mutually overlapped for making sliding contact with each other, each of the blade blocks having a skin contact surface generally parallel to a projecting direction of the comb-like blades;
• and
• an elongated main body including a drive unit for reciprocating at least one of the comb-like blades,
• wherein the main body includes an attachment unit for detachably attaching a selected one of the plurality of blade blocks to the main body, and
• wherein blade blocks include a first blade block, a second blade block whose skin surface contact angle between a longitudinal axis of the main body and the skin contact surface is acute and is greater than a skin surface contact angle of the first blade block, and a third blade block having a skin surface contact angle which is substantially the same as the skin surface contact angle of the second blade block, the third blade block having a cutting width smaller than a cutting width of the first blade block and the second blade block.