A hand held dispenser for dispensing lengths of sheet material from a roll of sheet material, the roll of sheet material having opposing, first and second roll ends, the dispenser comprising: a handle assembly including: a frame, a hub for selectively receiving the first roll end, the hub rotatably mounted to the frame such that the hub is rotatable about a hub axis; an elongated blade attached to and extending from the frame, the elongated blade having a cutting edge extending between opposing, first and second blade ends (206, 208), wherein the first blade end is proximate the frame and the second blade end is opposite the frame; and a support assembly including: a bracket attached to the elongated blade apart from the frame, the bracket including a guide track having first and second segments (270, 272) combining to define a guide axis, a brace defining a leading side opposite a trailing side, the leading side slidably mounted to the guide track such that the brace is slidable relative to the elongated blade along the guide axis, a support hub for selectively receiving the second roll end, the support hub rotatably mounted to the trailing side of the brace; wherein the dispenser is configured to provide: a locked state in which the leading side of the brace is over the first segment of the guide track and is prevented from rotating relative to the bracket, an unlocked state in which the leading side of the brace is over the second segment of the guide track and can rotate relative to the bracket. a handle assembly including: a frame, a hub for selectively receiving the first roll end, the hub rotatably mounted to the frame such that the hub is rotatable about a hub axis; a frame, a hub for selectively receiving the first roll end, the hub rotatably mounted to the frame such that the hub is rotatable about a hub axis; an elongated blade attached to and extending from the frame, the elongated blade having a cutting edge extending between opposing, first and second blade ends (206, 208), wherein the first blade end is proximate the frame and the second blade end is opposite the frame; and a support assembly including: a bracket attached to the elongated blade apart from the frame, the bracket including a guide track having first and second segments (270, 272) combining to define a guide axis, a brace defining a leading side opposite a trailing side, the leading side slidably mounted to the guide track such that the brace is slidable relative to the elongated blade along the guide axis, a support hub for selectively receiving the second roll end, the support hub rotatably mounted to the trailing side of the brace; a bracket attached to the elongated blade apart from the frame, the bracket including a guide track having first and second segments (270, 272) combining to define a guide axis, a brace defining a leading side opposite a trailing side, the leading side slidably mounted to the guide track such that the brace is slidable relative to the elongated blade along the guide axis, a support hub for selectively receiving the second roll end, the support hub rotatably mounted to the trailing side of the brace; wherein the dispenser is configured to provide: a locked state in which the leading side of the brace is over the first segment of the guide track and is prevented from rotating relative to the bracket, an unlocked state in which the leading side of the brace is over the second segment of the guide track and can rotate relative to the bracket. a locked state in which the leading side of the brace is over the first segment of the guide track and is prevented from rotating relative to the bracket, an unlocked state in which the leading side of the brace is over the second segment of the guide track and can rotate relative to the bracket.