The phrase "a sure grip" is correct and usable in written English.
It can be used to describe a firm hold or control over something, often in a physical or metaphorical sense.
Example: "With a sure grip on the steering wheel, she navigated the winding road with confidence."
Alternatives: "a firm hold" or "a strong grasp."
The back is a dimpled soft-touch plastic like the Galaxy S5 smartphone's back, and feels nice to touch while providing a sure grip.
Overthrowing a view held by generations of art historians and museologists calls for an unassailable thesis and a sure grip on the facts.
Haigh, whose first book won the PEN/Hemingway Award, has a sure grip on her characters and a belief in place as a determining factor in the shapes of our lives.
Waterproof to depths of 200 feet, the camera is small, light and rubber-armored for a sure grip, and features a two-inch display screen and a 12x zoom.
An ergonomic shape provides a sure grip while specially design cutouts provide access to the volume and silence controls, and an integrated, machined "on/off" button has been added to complete the clean lines of the Vapor.
"Though the story might have a certain sameness," LaSalle says, "the action varies enough and the central mystery is arresting enough that 'The Gunman' maintains a sure grip on the viewer".
In a similar vein, the generous size and notched rim of the crown, as well as the ratcheted case edge, facilitate getting a quick and sure grip on this exceptional instrument.
In Calderon's story a king, warned by astrologers that his son will be a raging maniac, imprisons the baby in a tower, with but one human contact, an old guardian (Yusef Bulos, whose sure grip on a complicated character often seems to hold this play together).
In the hands of the thoughtfully brilliant, they are gently placed into the sure grip of a tradition of radical thought, that has heard every word.
But they're equipped with three critical components: an anchor to attach to objects, a winch to pull on that anchor and sticky feet to provide sure grip while doing so.
The back is clad in sure grip rubber and the screen is held in place by a thin strip of rubber that doubles as a last line of defense in the event of a fall.
