Abstract: A stitching anchor nail includes an anchor body in a shape of straight tube, a non-circular blade jack formed in and through an axis portion of the anchor body along an axis direction thereof, a thread-in structure at a rear-end part of the anchor body, and a spiral tooth structure formed on a side surface of the anchor body and extending from a rear-end part toward a front end of the anchor body along a spiral direction. The spiral tooth structure is formed with a tooth-in entrance at a front end thereof and has a cross section in a shape of a trapezoid having an included angle ranging from 45 to 55 degree between two side edges of the trapezoid and has a tooth top in a width ranging from 0.4 to 0.7 mm.

Abstract: A multifunctional floating apparatus, which is able to float on water, includes a floating device, a handrail, a driving device, a controlling device, and a battery set. The floating device has an exterior edge and an interior edge, wherein the exterior edge is longer than the interior edge, and the floating device has an inner side at the interior edge. The handrail is connected to the inner side of the floating device, wherein the handrail has at least a holding portion for a user to hold the handrail. The driving device is provided on the floating device to drive the floating device to sail on water. The controlling device is electrically connected to the driving device to control the controlling device. The battery set is disposed to the floating device to supply the driving device with electric power.

Abstract: A multifunctional floating apparatus, which is able to float on water, includes a floating device, a handrail, a driving device, a controlling device, and a battery set. The floating device has an exterior edge and an interior edge, wherein the exterior edge is longer than the interior edge, and the floating device has an inner side at the interior edge. The handrail is connected to the inner side of the floating device, wherein the handrail has at least a holding portion for a user to hold the handrail. The driving device is provided on the floating device to drive the floating device to sail on water. The controlling device is electrically connected to the driving device to control the controlling device. The battery set is disposed to the floating device to supply the driving device with electric power.