Abstract: A core (16) for a roll of material, which core (16) comprises a body portion (18), a first member which is removably secured to a first end (22) of the body portion (18), a first bore (24) through the first end member (20), a second end member (26) which is removably secured to a second end (28) of the body portion (18), a second bore through the second end member (26), a third bore (30) through the body portion (18), the first, second and third bores all having a common longitudinal axis, the first bore (24) having a smooth inner surface (32) whereby the first bore (24) is able to receive a chuck (34) such that centering of the chuck (34) is facilitated by the smooth inner surface of the first bore (24), the second bore having a smooth inner surface (32) whereby the second bore is able to receive a chuck (34) such that centering of the chuck (34) is facilitated by the smooth inner surface (32) of the second bore, the body portion being made of a metal, and the first and second end members (20, 26) each being