INSERT Numeric Variable

I just can't seem to figure out this problem Here's the code:

minv = request.form("min")
maxv = request.form("max")
price = request.form("price")

Response.write(minv &" "& maxv &" "& price)

sSQK = "INSERT INTO tbl_weight (min, max, price) Values (" & minv &","& maxv &",'"& price &"')"
conn.Execute(sSQK)
Response.write("Gegevens toegevoegd!")

But it just keeps givving me an error

"Microsoft JET Database Engine error '80040e14'
Syntax error in INSERT INTO statement. "

I think it has to do something with the "minv" and "maxv" those two are numbers and if I remove them the INSERT command goes fine... but what am I doing wrong ?